Insulated bottle



Aug. 7, 1962 3,048,294

W. F. OSBORN ET AL INSULATED BOTTLE Filed May 1, 1959 iiiiiiiiliiinn 7- 4 /46' 20 52/7 a I (H 4x44 F7 3 34 44 /4 20 I f i 5 /a I6 50 43 Wilford f. Osborn Norma R. Osborn 1N VEN TORS BY Q m 3,048,294 HNSULATED BOTTLE Wilford F. Osborn and Norma R. Osborn, Ashland, Oreg. (R0. Box 4646, Sacramento, Calif.) Filed May 1, 1959, Ser. No. 810,320

1 Claim. (cl. 215-13 This invention relates to insulated bottles and more particularly to the type of bottle adapted to contain liquid and maintain it either cold or hot.

An object of the invention is to provide a lightweight,

.shocks and bumps'which would ordinarily be received in use of the bottle.

In this regard the external configuration of the bottle is of importance, having a rounded shape with no sharp corners to localize high strains when dropped on a corner thereof.

Briefly, a bottle in accordance with this invention is made of an inner plastic substance which is pliable, for instance polyethylene, certain polystyrenes and others. The outer covering of the bottle is made of flexible plastic or may be made of other ordinarily non-breakable substances such as fiber glass. The inner liner and the outer covering of the bottle are spaced apart by means of a lightweight thermal insulator of wood fiber, e.g. Balsam Wool (T.M. registered Patent Oflice) or other suitable insulation, and there are reflective sheets or films in between the insulation and the confronting, spaced surfaces of the inner liner and the outer covering. This construction serves the intended purpose of the bottle very well, keeping the contents of the bottle either hot or cold depending on the condition of the liquid which is poured into the bottle.

These together with other objects and advantages which will become subsequently apparent reside in the details of'construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a perspective view of a typical bottle constructed in accordance with the invention.

FIGURE 2 is a sectional view taken on the-line 22 of FIGURE 1.

FIGURE 3 is a sectional view taken on the line 33 of FIGURE 2.

FIGURE 4 is an enlarged sectional view taken on the line 4-4 of FIGURE 2.

In the accompanying drawings there is shown an insulated bottle constructed to exemplify the invention. This insulated bottle has a pair of side walls 12 and 14, together with a pair of end walls 16 and 18, each of which is integrally joined to a bottom wall 20. The upper parts of the side walls 18 and 16 have slanted portions 22 and 24 merging with top wall 26 which is approximately parallel to bottom wall 20. Neck 28 is integrally joined with top wall 26 and has a filler opening 30 therein. There is an upwardly opening funnel 32 built in the neck 30 to facilitate pouring liquid into the chamber 70 34 enclosed within the bottle. Screw threads -36 or like fastening means separably attach closure cap 38 to the role neck in order to cover funnel 32 and stopper 40 that is separably carried in the neck 3i; and frictionally held in place.

The construction of all of the walls and the bottom of the bottle 10 is of importance. As shown in FIGURE 4 there is an outer covering or envelope 44 preferably made of a plastic or other synthetic substance. Certain plastics and other substances have been mentioned previously, although there are numerous additional substances possible such as plastics, fiberglass, synthetic or natural rubbers, etc. A film or sheet 46 of light reflective material, for example aluminum foil, tinfoil, aluminum paint, etc. is fitted flush against or adhered to the insure surface of the covering or envelope 44. A pad, mat or the like of insulation 48 fits flush against the reflective film or sheet 46. The insulating material may be fibrous cork or one of the numerous synthetic insulators used in a number of ways at the present time. The next layer is ,an additional layer of reflective substance 50 which may be identical to the film or sheet 46. Finally, the inner liner 52 is preferably made ofplastic which is more or less impervious to liquids that would ordinarily be used in an insulated bottle. A plurality of ribs 54 on the inner liner 52 are in the insulation space and function to rigidity liner 5 2. These ribs are integral with liner 52 and the thickness of the ribs is not sufiicient to span the space between reflective sheets 46 and 50. When insulation 48 is between a pair of flexible sheets, such as kraft paper of Balsam Wool, the ribs maintain a dead air space 53 between the insulation 48 and reflective film 46.

As noted in FIGURES 1 and 2 all corners of the bottle are somewhat rounded, and neck 28 is constructed by building up the insulation 48 between portions of the cover '44 and liner 46in the region of the neck thereby forming a generally cylindrical'neck of a thickness in section substantially greater than the remainder of the walls of the bottle 11 The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling the scope of the invention as claimed.

What is claimed as new is as follows:

In an insulated container, the combination of an inner liner of plastic material, an outer jacket of plastic material enclosing said liner in spaced relation therefrom, a layer of radiation reflecting metallic material provided on the inner surface of said jacket, a layer of radiation reflective metallic material provided on the outer surface of said liner, a set of ribs provided on the outer surface of said liner and maintaining the adjacent layer of reflective material spaced therefrom to provide dead air spaces between the liner and the last mentioned layer, and a filler of insulating material provided between said layers of reflective material.

References Cited in the file of this patent UNITED STATES PATENTS 672,791 Mills Apr. 23, 1901 2,376,064 Knapp May 15, 1945 2,633,264 Dinsmore et al. Mar. 31, 1953 2,643,021 Freedman June 23, 1953 2,817,124 Dybuig Dec. 24, 1957 2,818,990 I Sommerfeld Jan. 7, 1958 FOREIGN PATENTS 729,252 Great Britain May 4, 1955 Patented Aug. 7, 1962 v 

